How many chill hours does 95631 get?

95631 averages 2044 chill hours per winter, ranging from 1834 to 2246 across the last 10 years.

What hardiness zone is 95631?

95631 is in USDA hardiness zone 9a.

Location almanac

The short answer

95631 averages 2,044 chill hours per winter (1,834–2,246 across 10 years) in USDA zone 9a.

Computed from 10 winters of ERA5 hourly temperature (Open-Meteo, 2015–2025); zones from USDA PHZM 2023. Data updated July 3, 2026. See methodology.

Every variety in our database, checked against 95631’s chill hours and zone:

Chill and zone requirements are comfortably met in 95631.

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How many chill hours does 95631 get?: 95631 averages 2044 chill hours per winter, ranging from 1834 to 2246 across the last 10 years.
What hardiness zone is 95631?: 95631 is in USDA hardiness zone 9a.

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[1] Open-Meteo / Copernicus ERA5. Historical Weather API (hourly 2m temperature) — accessed July 2026
[2] USDA / PRISM (Oregon State University). 2023 USDA Plant Hardiness Zone Map — accessed July 2026